Corrosion-resistant aluminum profile
By setting a protective layer of nylon lining and hard plastic layer on the aluminum profile, combined with a hollow design and composite coating layer, the problem of insufficient corrosion resistance of aluminum profile in harsh environments is solved, and higher corrosion resistance and structural strength are achieved.
Patent Information
- Application Number
- CN202520563797.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-27
AI Technical Summary
Aluminum profiles are not corrosion resistant enough in harsh environments such as marine and chemical plants. Traditional solutions such as anodizing and single coatings have problems such as insufficient durability and high cost.
The protective layer structure, consisting of a nylon liner and a rigid plastic layer, combined with a perforated design and a composite coating layer, enhances the corrosion resistance and structural strength of the aluminum profile.
It significantly improves the corrosion resistance and structural strength of aluminum profiles, while reducing costs and enhancing their impact resistance in temperature changes and dynamic environments.
Smart Images

Figure CN223868315U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aluminum profile technology, specifically relating to a corrosion-resistant aluminum profile. Background Technology
[0002] Aluminum profiles are widely used in construction, transportation, and electronics due to their lightweight and high strength. However, their corrosion resistance has long limited their service life, especially in harsh environments such as marine and chemical plants. Traditional solutions such as anodizing and single-coating have some effect, but they suffer from insufficient durability and high cost. Utility Model Content
[0003] The main objective of this invention is to provide a corrosion-resistant aluminum profile that improves the corrosion resistance of the aluminum profile through a lower cost structural feature, while also increasing the structural strength.
[0004] To achieve the above objectives, this utility model provides a corrosion-resistant aluminum profile, which includes an aluminum profile body, a protective layer fitted on the outside of the aluminum profile body, the protective layer including an outer layer and an inner layer, wherein the outer layer is a nylon lining and the inner layer is a rigid plastic layer; a column groove is provided inside the aluminum profile body, and sealing plates are fitted at the ends of both the aluminum profile body and the protective layer, with a column rod located inside the groove threaded between two sets of sealing plates; three sets of horizontal plates and a set of vertical plates are fixedly installed inside the protective layer to form a reinforcing layer.
[0005] The corrosion-resistant aluminum profile provided by this utility model features a nylon liner that provides impact and wear resistance, while a rigid plastic layer isolates it from chemically corrosive media, significantly improving overall corrosion resistance. The threaded connection between the column groove and the sealing plate, combined with the hollow structure design, reduces weight while enhancing deformation resistance and adapting to temperature changes. The horizontal and vertical plates form a grid-like reinforcing layer, dispersing stress and improving compressive and bending resistance. In summary, the corrosion-resistant aluminum profile provided by this application improves the corrosion resistance of aluminum profiles through lower-cost structural features, while also increasing structural strength.
[0006] In one possible implementation, a perforated structure is formed between the aluminum profile body and the protective layer. A locking block is fixedly installed on the inner wall of the sealing plate, and the locking block is engaged with the perforated area inside the protective layer and the aluminum profile body. This lower-cost structural feature improves the corrosion resistance of the aluminum profile while also increasing structural strength. The tight fit between the locking block and the perforated area enhances the connection strength between the protective layer and the aluminum profile, preventing delamination or detachment.
[0007] In one possible implementation, the outer surface of the aluminum profile body is coated with a composite coating layer, which includes a zinc plating layer, a passivated zinc layer, and an organopolysilazane layer. The zinc plating layer is bonded to the aluminum profile body, the passivated zinc layer is located outside the zinc plating layer, and the organopolysilazane layer is the outermost layer. The zinc plating layer can delay the oxidation of the aluminum substrate, the passivated zinc layer forms a dense oxide film, enhancing adhesion and corrosion resistance, and the organopolysilazane layer can improve UV resistance and chemical corrosion resistance, providing long-term protection as the outermost layer.
[0008] In one possible implementation, the aluminum profile body has an internal mounting cavity, within which a structural interlayer is installed. This structural interlayer is composed of rubber protrusions. The mounting cavity can be used for wiring and installing accessories, improving space utilization. The evenly distributed rubber protrusions can absorb vibration energy, enhancing the aluminum profile's impact resistance in dynamic environments.
[0009] In one possible implementation, the rubber protrusions are evenly distributed. This even distribution avoids localized stress concentration and extends the service life of the structural interlayer and the aluminum profile body. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of a corrosion-resistant aluminum profile structure provided by this utility model. Detailed Implementation
[0011] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0012] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0013] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0014] See attached diagram. Figure 1 , Figure 1 This is a schematic diagram of a corrosion-resistant aluminum profile structure provided by this utility model, as shown below. Figure 1As shown, the present invention provides a corrosion-resistant aluminum profile including an aluminum profile body 1. A protective layer is fitted on the outside of the aluminum profile body 1. The protective layer includes an outer layer 21 and an inner layer 22. The outer layer 21 is a nylon lining, and the inner layer 22 is a rigid plastic layer. A column groove 3 is provided inside the aluminum profile body 1. Sealing plates 4 are installed at the ends of both the aluminum profile body 1 and the protective layer. A column rod 5 located inside the groove is threaded between two sets of sealing plates 4. Three sets of horizontal plates 61 and a set of vertical plates 62 assembled between them are fixedly installed on the inner side of the protective layer to form a reinforcing layer.
[0015] The corrosion-resistant aluminum profile provided by this utility model features a nylon liner that provides impact and wear resistance, while a rigid plastic layer isolates it from chemically corrosive media, significantly improving overall corrosion resistance. The column groove 3 is threadedly connected to the sealing plate 4, and the hollow structure design reduces weight while enhancing deformation resistance and adapting to temperature changes. The horizontal plate 61 and vertical plate 62 form a grid-like reinforcing layer, dispersing stress and improving compressive and bending resistance. In summary, the corrosion-resistant aluminum profile provided by this application improves the corrosion resistance of aluminum profiles through lower-cost structural features, while also increasing structural strength.
[0016] In one possible implementation, a perforated structure is formed between the aluminum profile body 1 and the protective layer. A locking block 7 is fixedly installed on the inner wall of the sealing plate 4, and the locking block 7 is engaged with the perforated area on the inner side of the protective layer and the aluminum profile body 1. This lower-cost structural feature improves the corrosion resistance of the aluminum profile while also increasing structural strength. The locking block 7 fits tightly into the perforated area, enhancing the connection strength between the protective layer and the aluminum profile and preventing delamination or detachment.
[0017] In one possible implementation, the outer surface of the aluminum profile body 1 is coated with a composite coating layer, which includes a zinc plating layer, a passivated zinc layer, and an organopolysilazane layer. The zinc plating layer is bonded to the aluminum profile body 1, the passivated zinc layer is located outside the zinc plating layer, and the organopolysilazane layer is the outermost layer. The zinc plating layer can delay the oxidation of the aluminum substrate, the passivated zinc layer forms a dense oxide film, enhancing adhesion and corrosion resistance, and the organopolysilazane layer can improve UV resistance and chemical corrosion resistance, providing long-term protection as the outermost layer.
[0018] In one possible implementation, the aluminum profile body 1 has an internal mounting cavity, within which a structural interlayer is installed. This structural interlayer is composed of rubber protrusions 8. The mounting cavity can be used for wiring and installing accessories, improving space utilization. The evenly distributed rubber protrusions 8 can absorb vibration energy, enhancing the aluminum profile's impact resistance in dynamic environments.
[0019] In one possible implementation, the rubber protrusions 8 are evenly distributed. This even distribution avoids localized stress concentration and extends the service life of the structural interlayer and the aluminum profile body 1.
[0020] It is worth mentioning that those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A corrosion-resistant aluminum profile, characterized in that, The device includes an aluminum profile body, with a protective layer fitted on the outside of the aluminum profile body. The protective layer includes an outer layer and an inner layer, wherein the outer layer is a nylon lining and the inner layer is a rigid plastic layer. A column groove is provided inside the aluminum profile body, and sealing plates are installed at the ends of both the aluminum profile body and the protective layer. A column rod located inside the groove is threaded between two sets of sealing plates. Three sets of horizontal plates and a set of vertical plates are fixedly installed on the inner side of the protective layer to form a reinforcing layer.
2. The corrosion-resistant aluminum profile according to claim 1, characterized in that, A hollow structure is formed between the aluminum profile body and the protective layer. A clip is fixedly installed on the inner wall of the sealing plate, and the clip is engaged in the hollow part inside the protective layer and the aluminum profile body.
3. The corrosion-resistant aluminum profile according to claim 2, characterized in that, The outer surface of the aluminum profile body is coated with a composite coating layer, which includes a zinc plating layer, a passivated zinc layer, and an organopolysilazane layer. The zinc plating layer is bonded to the aluminum profile body, the passivated zinc layer is located outside the zinc plating layer, and the organopolysilazane layer is the outermost layer.
4. The corrosion-resistant aluminum profile according to claim 3, characterized in that, The aluminum profile body has an internal mounting cavity, and a structural interlayer is installed inside the mounting cavity. The structural interlayer is composed of rubber protrusions.
5. The corrosion-resistant aluminum profile according to claim 4, characterized in that, The rubber ridges are evenly arranged.